nice BUT- I think the DH-intended Spike rims are overkill. I love Spank though, and have been blasting their Subrosa rims on my SX trail for the last year. More than enough rim for this bike and almost 3 oz lighter..

Yes, I guess it would be unfair to compare those two as well since they really aren't in the same category. DHX air vs Vector air would be more of an apples to apples. From what I'm reading and ride reports from friends though I'd put my money on the new X Fusion stuff. I've got a Vengeance HLR being installed at the moment. Can't wait to write up a comparison review.